Arbitrary file upload in CuteNews

1) Arbitrary file upload

EUVDB-ID: #VU35981

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11447

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: Yes

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

An issue was discovered in CutePHP CuteNews 2.1.2. An attacker can infiltrate the server through the avatar upload process in the profile area via the avatar_file field to index.php?mod=main&opt=personal. There is no effective control of $imgsize in /core/modules/dashboard.php. The header content of a file can be changed and the control can be bypassed for code execution. (An attacker can use the GIF header for this.)

Mitigation

Install update from vendor's website.

Vulnerable software versions

CuteNews: 2.1.2

External links

http://pentest.com.tr/exploits/CuteNews-2-1-2-Remote-Code-Execution-Metasploit.html
http://www.exploit-db.com/exploits/46698/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.